Sökning: "linjär approximation"

Visar resultat 1 - 5 av 29 uppsatser innehållade orden linjär approximation.

  1. 1. Randomized Diagonal Estimation

    Master-uppsats, KTH/Matematik (Avd.)

    Författare :Niclas Joshua Popp; [2023]
    Nyckelord :Diagonal estimation; randomized numerical linear algebra; low-rank approximation; matrix functions; Diagonalestimering; randomiserad numerisk linjär algebra; lågrankad approximation; matrisfunktioner;

    Sammanfattning : Implicit diagonal estimation is a long-standing problem that is concerned with approximating the diagonal of a matrix that can only be accessed through matrix-vector products. It is of interest in various fields of application, such as network science, material science and machine learning. LÄS MER

  3. 2. When is Electric Freight Cost Competitive? : Computational modeling and simulation of total cost of ownership for electric truck fleets

    Uppsats för yrkesexamina på avancerad nivå, Linköpings universitet/Institutionen för ekonomisk och industriell utveckling

    Författare :Anton Zackrisson; [2023]
    Nyckelord :electric freight; battery-electric trucks; total cost of ownership; decision making under deep uncertainty DMDU ; cost-competitiveness; exploratory modeling and analysis EMA ; EMA workbench; quasi-Monte Carlo method; VRP; EVRP; elektrifiering; godstransport; elektriska lastbilar; total ägandekostnad; kostnadskonkurrenskraft; ruttoptimering;

    Sammanfattning : Battery electric trucks (BETs) offer environmental benefits in terms of reduced carbon emissions and enhanced energy efficiency but have been challenged with economic viability compared to conventional internal combustion engine trucks (ICETs) caused by substantial acquisition costs, limited charging infrastructure, and concerns regarding range and payload capacity.  Previous studies focus on TCO at the vehicle or policy level but overlook the system and firm-level impacts. LÄS MER

  4. 3. Stochastic Optimization of Energy Prosumption Systems : A case study on energy balancing for self-sustainable societies

    Uppsats för yrkesexamina på avancerad nivå, Luleå tekniska universitet/Institutionen för ekonomi, teknik, konst och samhälle

    Författare :Jim Allansson; [2022]
    Nyckelord :Stochastic Optimization; Energy Prosumption; SAA; Linear Programming; Stokastisk Optimering; Energi Prosumption; SAA; Linjärprogrammering;

    Sammanfattning : To achieve a sustainable future fossil electricity is being replaced with renewable, leading to higher uncertainties in electricity production. This has resulted in an incentive for consumers to produce, sell, and store their own electricity, hence becoming prosumers. LÄS MER

  5. 4. Effects of Temperature and Moisture Content on Young’s Modulus in Glass Fiber Reinforced Polyamide

    Uppsats för yrkesexamina på avancerad nivå, Blekinge Tekniska Högskola/Institutionen för maskinteknik

    Författare :Joel Sandberg; Samuel Sjölin; [2022]
    Nyckelord :Polyamide; nylon 66; PA66GF25; glassfiber reinforced polyamide; Young’s modulus; Polyamid; nylon 66; PA66GF25; glasfiberförstärkt polyamid; Youngs modul.;

    Sammanfattning : This thesis was made in cooperation with Roxtec. Roxtec specialises in cable sealingsolutions and are world leading in their area. In many of Roxtec’s products steel isused in the frame holding the sealing rubber. To lower Roxtec’s environmental foot-print plastic would be used instead in the frames if possible, more specific polyamide6. LÄS MER

  7. 5. Stochastic Lateral Transshipment within the Fast Fashion Industry

    Master-uppsats, KTH/Matematik (Inst.)

    Författare :Linnéa Andersson; [2022]
    Nyckelord :Degree Project; Fast Fashion; H M; Lateral Transshipment; Linear Optimization; Master’s Thesis; Recourse Problem; Retail; Sample Average Approximation; Stochastic Optimization; Transshipment; Two-Stage Recourse Problem; Detaljhandel; H M; Lagerflyttar; Lagerhantering; Linjär optimering; Masters Examensarbete; Mode; Optimering; Snabbt mode; Stokastisk optimering; Transportproblem;

    Sammanfattning : In an industry with highly variable demand and a fickle customer demanding a fast changing supply, quickly responding to the customer becomes crucial for the fast fashion retailer. Using lateral transshipment, one is able to reorganize supply within an echelon of the supply chain to quickly respond to the forecasted demand by looking at shorter more accurate forecasts and act accordingly. LÄS MER